Rear sight



REAR S I GHT File d Jan. 2, 1925 I i 5 4-: l",

dimes vI Hatcher Patented Apr. 29, 1930 Q UNITED STATES JAMES L. HATCHER, 0F BROOKS FIELD, TEXAS REAR SIGHT Application filed January 2, 1925..1Seria1 No. 195.

(GRANTED UNDER THE ACT OF MARCH 3, 1883, AS AMENDED APRIL 30, 1928; 370 0 G. 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes without the payment to me of any royalty thereon.

The subject of this invention is a rear sight intended primarily for use on rifles and especially designed to replace the sights on existing rifles for the purpose of increasing the length of the sight base and placing the rear sight closer to the eye of the gunner.

The main objects of the invention are the.

provision of a simple and efficient sight which may be mounted directly on the receiver of a rifle without the use of a special base plate and with very little change in the receiver.

These objects are obtained by providing a sight slidable at right angles with respect to the receiver through cooperating means on the sight and receiver; specifically, by providing a slot in the side of the receiver in which a leg of the sight is slida-bly mounted, and in equipping the sight with the usual elevating and windage screws.

To these and other ends, my invention consists in the construction, arrangement, and combination of elements, described hereinafter and pointed out in the claims forming a part of this specification.

A practical embodiment of my invention is illustrated in the accompanying drawings, wherein:

Fig. 1 is a view in side elevation of a fragment of a rifle with they sight constructed in accordance with the invention in place thereon;

Fig. 2 is a section on the line 22 of Fig. 1; Fig. 3 is a top plan view of the sight; Fig. 4 is a section on the line 44 of Fig.3; v

Fig. 5 is a sectiononthe line 55 of Fig. 3; V

Fig. 6' is a section on the line 66 of 2;

Fig. 7 is a detail view in side elevation of the pin containing the half nut; and

Fig. 8 is a plan view of the same.

Referring to the drawings by numerals of reference:

In carrying out my invention, the slot 1 formed in a side of the receiver 2 has grooves in the walls thereof to receive the tongues 3 of the leg 4 of the sight with a sliding fit. The slot 1 is the slot provided in the receiver of a rifle of this character to receive the on and off latch with which such rifles are equipped. This slot is, conveniently, initially made with groovesto receive the tongues 3 of the leg.

The leg 4 of the sight has an angularly disposed upper end 5, which overlies the receiver and the under surface of which is prefer ably formed to conform to the contour of the receiver upon which it rests when the sight is in its lowermost position.

Upon the angled portion 5 may be formed a sighting aperture of any desired description, the form herein shown being a hinged peep sight 6 mounted on a block 7, which is tapped to receive a windage screw 8 journaled in the portion 5.

To provide for elevation of the sight an elevating screw 9 is mounted in the leg l of the sight and its threads engage with the threads of a half nut 10 formed in a pin 11, the pin is positioned in the portion 12 of the receiver which is usually provided thereon for the reception of a pin carrying the on-and-oif safety switch.

The operation of the sight is as'follows: The pin on which the usual on and ofl'v switch is pivoted and the switch are removed, the leg of the sight is slid into place in the slot 1, the pin 11 inserted and the elevating screw brought into engagement with the half nut 10 of such pin and threaded into place. The sight isthen ready for use, the elevating screw being operated to bring the sight to the desired range setting and the windage screw manipulated to bring the peep sight to the proper windage setting.

While in the foregoing therehas been illustrated and described-such combination and arrangement of elements as constitute the preferred embodiment of my invention, it is nevertheless desired toemphasize the fact that interpretation of the invention should only be conclusive when made in the light of the subjoined claims.

I claim:

1. The combination with a rifle having a receiver provided with a groove formed in one side thereof and laterally extending projections on each side of the groove formed with aligned recesses, of a pin in the recesses formed with a threaded transverse groove,

a sight support mounted to slide in the receiver groove, a rotatable element carried by the support and threadedly engaging the groove of the pin to lock the pin in place and,

When rotated, cooperating with thepin to bodily move the support in elevation.

52. The combination With a rifle having a receiver, of a sight support slidably mounted on the side of the receiver, a pin carried by the receiver formed With a threaded groove eX- tending transversely thereof, a screw carried by the support and threadedly engaging the groove to lock the pin and support in place in the receiver and upon rotation of the screw to slide the support in elevation.

J AMES L. HATGHER. 

